Effects of Rolling and Sand Topdressing on Dollar Spot Severity in Fairway Turfgrass

Green, Thomas O.; Rogers, John N.; Crum, James R.; Vargas, J. M.; Nikolai, Thomas A.

doi:10.21273/horttech04272-19

Cited by 4 publications

(6 citation statements)

References 19 publications

(30 reference statements)

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“…If cultivation practices require the additional input of sand topdressing to effectively reduce OM levels, the next logical conclusion would be that topdressing alone is adequate for mitigating OM accumulation. Like the core cultivation work, a wide variety of sand topdressing frequencies (every other week to once a year) and rates [(0.01 cm (0.15 kg m 2 ) to 0.95 cm (14.65 kg m 2 )] have been explored (Barton et al, 2009;Carrow et al, 1987;Dunn et al, 1995;Green et al, 2019;Kowalewski et al, 2010;McCarty et al, 2007;Obasa et al, 2013;Proctor et al, 2014;Smith, 1979;Schmid et al, 2014;Stier and Hollman, 2003;Wang et al, 2015). Together, these studies indicate the possibility of managing OM with sand topdressing alone.…”

Section: Organic Matter Management Practicesmentioning

confidence: 99%

Advances in managing organic matter in turfgrass ecosystems

Kowalewski¹,

Schmid²,

Wang³

2023

Burleigh Dodds Series in Agricultural Science

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Organic matter (OM) management is a critical component in sustainable turfgrass management. Organic matter improves the soils’ ability to hold nutrients and water. However, when OM accumulation is excessive, several detrimental effects develop. Turfgrass is a tillering plant, producing a considerable amount of lateral growth, which will cause inordinate OM accumulation. The objectives of this chapter are to outline how OM effects turfgrass, the available methods for monitoring and measuring OM accumulation, outline correlations between OM levels and disease activity/microbial populations, and identify successful OM management practices.

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Section: Organic Matter Management Practicesmentioning

confidence: 99%

Advances in managing organic matter in turfgrass ecosystems

Kowalewski¹,

Schmid²,

Wang³

2023

Burleigh Dodds Series in Agricultural Science

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“…Sand topdressing objectives include smoothing the putting surface, controlling thatch, modifying the soil surface, and firming the surface (Rieke, 1999). It has been hypothesized that sand topdressing may increase disease; however, research indicates that frequent sand topdressing can enhance recovery of anthracnose (Inguagiato, Murphy, & Clarke, 2007) or lessen the severity of dollar spot (Green, Rogers, Crum, Vargas, & Nikolai, 2019). Sand topdressing is acknowledged as firming the surface which could decrease VWD from foot traffic.…”

Section: Introductionmentioning

confidence: 99%

Impact of putting green management on visible wear damage caused by foot traffic

et al. 2021

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A 2-yr study was conducted at Michigan State University (MSU) and the University of Arkansas (UARK) to identify creeping bentgrass (Agrostis stolonifera L.) putting green management practices that minimize or exacerbate visible wear damage (VWD) caused by aggressive golf shoes or cleats. Management treatments included different levels of grooming (none vs. three times weekly at a depth of 0.5 mm), lightweight rolling (none vs. three times weekly), sand topdressing (none vs. every 14 d at the rate of 0.6 L m −2 ), and nitrogen fertility (low N vs. high N every 14 d) applied as urea at the rates of 0.6 or 1.2 g m −2 . Rolling significantly increased VWD at UARK in both years and at MSU in 2017. When increases in VWD occurred on rolled plots, there were also significant increases in moisture in the top 3.8 cm of the root zone. Higher fertility consistently increased VWD at UARK throughout the study and after a single traffic event at MSU. Throughout the trial, grooming and sand topdressing occasionally reduced VWD at both locations. These results will help agronomists and golf course superintendents fine-tune cultural practices to mitigate VWD on intensively managed creeping bentgrass putting greens.

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“…Various cultural practices are employed by turfgrass managers to prevent and mitigate damage caused by dollar spot. Green et al (2019) determined that sand topdressing fairways could reduce disease by up to 50% at peak dollar spot activity. Additionally, rolling three times weekly has been shown to reduce dollar spot (Nikolai et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Green et al. (2019) determined that sand topdressing fairways could reduce disease by up to 50% at peak dollar spot activity. Additionally, rolling three times weekly has been shown to reduce dollar spot (Nikolai et al., 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Cultural practices, alone, are often not enough to provide acceptable dollar spot control (Green et al., 2019; Nikolai et al., 2001). Unacceptable disease suppression from cultural practices as well as resistance to many of the modern, site‐specific fungicides in a variety of crops has led researchers to experiment with sulfur‐based, broad‐spectrum chemistries to suppress fungal pathogens.…”

Section: Introductionmentioning

confidence: 99%

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Strategies for increasing ferrous sulfate efficacy against dollar spot of creeping bentgrass

Hutchens

Roberson

Shelton

et al. 2021

Intl Turfgrass Soc Res J

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Dollar spot (Clarireedia spp.) is a damaging turfgrass disease. Ferrous sulfate (FeSO 4 ) suppresses dollar spot with little risk of resistance. Optimizing FeSO 4 applications is crucial for adequate dollar spot suppression. Supplementing FeSO 4 applications with chlorothalonil fungicide could also increase efficacy against dollar spot and longevity of disease suppression. Four experiments were conducted to determine the 1) optimal water carrier volume for FeSO 4 , 2) proper nozzle selection for FeSO 4 applications, 3) most efficacious rate combination of FeSO 4 and chlorothalonil, and 4) longevity of chlorothalonil efficacy when applied in conjunction with FeSO 4 for dollar spot suppression on creeping bentgrass (Agrostis stolonifera L.). These studies were conducted on either putting greens mown at 3.2 to 6.4 mm or fairways mown at 16.5 mm. The following carrier volumes were tested in Experiment 1: 281, 421, 842 and 1684 L ha -1 . For Experiment 2, Turbo FloodJet (TF), Turbo TeeJet Induction (TTI), Air Induction Turbo TwinJet (AITTJ), and Extended Range Flat Fan (XRFF) nozzles were used to determine optimal nozzle type. In Experiment 3, chlorothalonil was applied at 0, 2.28, 4.57, 6.86 and 9.16 kg a.i. ha -1 with or without 48.8 kg ha -1 of FeSO 4 . In Experiment 4, 48.8 kg ha -1 of FeSO 4 was applied biweekly and chlorothalonil was curatively applied at 8.2 kg a.i. ha -1 when infection centers per plot reached 30. Water carrier volume had no effect on dollar spot suppression, the AITTJ and XRFF nozzles provided the greatest disease suppression and turf quality, FeSO 4 reduced effective chlorothalonil rates by up to 68.5% and FeSO 4 increased longevity of chlorothalonil efficacy.

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Effects of Rolling and Sand Topdressing on Dollar Spot Severity in Fairway Turfgrass

Cited by 4 publications

References 19 publications

Advances in managing organic matter in turfgrass ecosystems

Advances in managing organic matter in turfgrass ecosystems

Impact of putting green management on visible wear damage caused by foot traffic

Strategies for increasing ferrous sulfate efficacy against dollar spot of creeping bentgrass

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